Can you clarify what you are reporting to the IRS?
Are you the employer, and filing payroll forms and a W-2? Are you the employee (or self-employed) that did that work? The more information you can provide about the situation and what you are trying to report, the more likely someone can give you a good answer.
Generally, hours don't matter, just income/pay. That means whatever reporting you are trying to do is based on the total dollar amounts, not based on hours. But depending on the exact details of your situation, that could possibly vary.
